Question

I have the following form

<form id="upload" method="post" EncType="Multipart/Form-Data" action="reciver.aspx">
        <input type="file" id="upload" name="upload" /><br/>
        <input type="submit" id="save" class="button" value="Save" />            
</form>

When I look at the file collection it is empty.

HttpFileCollection Files = HttpContext.Current.Request.Files;

How do I read the uploaded file content without using ASP.NET server side control?

Answer 1

Why do you need to get the currect httpcontext, just use the page’s one, look at this example:

//aspx
<form id="form1" runat="server" enctype="multipart/form-data">
 <input type="file" id="myFile" name="myFile" />
 <asp:Button runat="server" ID="btnUpload" OnClick="btnUploadClick" Text="Upload" />
</form>

//c#
protected void btnUploadClick(object sender, EventArgs e)
{
    HttpPostedFile file = Request.Files["myFile"];
    if (file != null && file.ContentLength )
    {
        string fname = Path.GetFileName(file.FileName);
        file.SaveAs(Server.MapPath(Path.Combine("~/App_Data/", fname)));
    }
}

The example code is from Uploading Files in ASP.net without using the FileUpload server control

Btw, you don’t need to use a server side button control. You can add the above code to the page load where you check if the current state is a postback.

Good luck!